package diShiErZhou.zuoye4;

public class zhuHanShu {
    public static void main(String[] args) throws InterruptedException {
        Thread t1=new threat4("t1");
        Thread t2=new threat4("t2");
        Thread t3=new threat4("t3");
        Thread t4=new threat4("t4");

        t1.start();
        t1.join();//插队
        t2.start();
        t1.join();
        t3.start();
        t4.start();

    }
}
